LHB Industries is a popular source.
Rochester wide bands are the commonly used product.
If you contact Rochester medical they can send a sample pack with a sizing gauge.
if you need to get sized PDQ measure the flacid diameter and round down to the next size. The silicone is very thin and will stretch for a no wrinkle fit.
Don after showering, before body oils emerge, good for the day.
With that much information a local pharmacy can probably get you started.
I flush with rubbing alcohol followed by vinegar.
What you do for quick disconnect, should you choose can be a whole other thread!
You're gonna love it!
Pete
Thanks Pete
I will have to check them out. I made the mistake today and went to a local medical supply store and bought a few. They wanted $3 each, I thought that was quite high for a latex ballon with a hole in it! LOL